Replacing this filter was very easy: two screws hold in the grill cover at the top of the microwave, and then the filter just slides in and out of its holder. There was quite a bit of grease in the area, probably pulled there by the vent from the stove top. I cleaned the grease up and also hand-washed the wire-mesh filter on the bottom of the microwave with soap and warm water. Airflow when running the vent is now noticeably better.

Fortunately, appliance parts always have what I need to replace older and newer model parts. My requests are shipped via FedEx within a minimum amount of time to complete the task at hand, there's never a need to drive to several brick and mortar stores to complete the project. This time, only a light bulb for the hood of my microwave was needed and this company didn't disappoint.